Using OWA 2003 as the Default Mail Client in Your Organization
Because Outlook Web Access (OWA) 2003 has become so feature-rich (in premium mode) and provides a user interface that closely matches Microsoft Office Outlook 2003 (also known as the Outlook MAPI client), provides far better performance and security than was the case with earlier versions, it’s getting more and more popular to use OWA 2003 as the default client among users within the organization (especially when speaking retail stores, schools and factory floors etc.) Continue at source.